SignatureMethod

SignatureVersion

Description: Signature algorithm version. The current version is “1.0”.

SignatureNonce

Name: SignatureNonce

Type: String

Required: Yes

Description: Unique random number preventing network replay attacks. You must use different random numbers for different requests.

Timestamp

Name: Timestamp

Type: String

Required: Yes

Description: Timestamp for a request. The date format follows the ISO8601 standard and uses UTC time. The following is an example of the timestamp format:YYYY-MM-DDThh:mm:ssZExample: 2013-01-10T12:00:00Z (equivalent to 1/10/2013 20:00:00 Beijing time)

Request example

https://sts.aliyuncs.com/

?Format=xml

&Version=2015-04-01

&Signature=Pc5WB8gokVn0xfeu%2FZV%2BiNM1dgI%3D

&SignatureMethod=HMAC-SHA1

&SignatureNonce=15215528852396

&SignatureVersion=1.0

&AccessKeyId=key-test

&Timestamp=2012-06-01T12:00:00Z

…

Public return parameters

Each time you send a request to invoke an interface, the system will return a unique identification code (“RequestId”) to you, no matter the request is successful or not.